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H. MINER.

MACHINE FOR MAKING ROOFING FABRIC. 7 g

No. 276,856.- Patented May 1,1888.

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7 UNITED STATES 1 PATENT OFFICE.

HENRY M. MINER, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE V GRANITE ROOFING COMPANY, (LIMITED) OF SAME PLACE.

MACHINE FOR MAKING ROOFING FABRIC.

SPECIFICATION forming part of Letters Patent No. 276,856, dated May 1, 188 3.

Application filed January 27,1883. (NonoodeL) To all whom it may concern Be it known that I, HENRY M. MINER, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Machines for Making Roofing Fabric; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being bad to the accompanying drawings, forming apart ofthis.

specification, in which Figure l is a vertical longitudinal section of my improved apparatus for making tarred roofing fabric composed of two or more layers and havinga sanded surface. Fig. 2 is a plan view of the same.

Like letters of reference indicate like parts in each.

The apparatus consists of a tank or vat, a, provided with standards I), on which are journaled rollers c, which support the rolls of paper or other material. In the lower partof the vat a is a roller, cl, mounted in sliding bearings d in the standards I), so that it may be raised by means of cords d and rollers (I? for the purpose of passing the end of the web It underit. When thisis doneit is again lowered to place. At the frontside of the vat a is a serrated blade, 6, over which the paper which passes from the roll 0 down through the vat under the roll (1 is caused to pass on its way to the delivery side of the machine. In front of the vat is a sand box or hopper,f, havinga narrow slot or opening, f, at its bottom,

through which to discharge the sand, which is controlled by a sliding valve, g, operated by a pivoted lever, g, or by other suitable means,

so that the slot'may be either partially closed or open at will. The roller 0 is placed back of the hopperfand forward of thebar 0.

My improved apparatus and method, as applied to the manufacture of roofing fabric com posed of a layer of burlap or similar fabric and a layer of roofing-paper having a sand-dusted outer side, is as follows: 1 mount a roll of the roofing-paper upon the roller 0 and a roll of burlap on the roller 0. The end of the web, h, of paper is passed down under the roller cl, in the lower part of the vat a, which is filled with reduced coal-tar, asphaltum, or any other suitable material of like nature, and is then carried upon the serrated edge of the bar 6 and over the top of the roller 0, and then under the hopper fto the front or delivery side of the machine. The end of the web of burlap t'is laid parallel with the end of the web of paper It and drawn out with the paper under the hopper. As the paper passes through the vat a it is saturated or coated on both sides with the coal-tar, and then passes up under the rod 70 and over the edge ofthe bar 6, thence over the top of the roll of burlap i, with which it comes in contact. The tar causes the web of burlap t to adhere to the under side of the web of paper, so that as the two are drawn out of the machine they are laid together and united smoothly and. evenly, so as to form a composite sheet. As the sheet passes under the sand box or hopper the sand falls down on its upper surface and coats it evenly with a suitable layer of sand, which is caused to adhere thereto by the tar. The purpose of the rod 70 and the bar 0 is to remove a portion of the tar which adheres to the webof paper I. The serrations in the bar 0 are made so that all of the tar on the under side shall not be scraped off, in order that sufficient may remain to cause the firm adherence thereto of the web of burlap, which is laid on its under side during its passage over the roll 0. drags over the bar 6, and if the bar had a straight edge it would scrape too much of the material off. If desired, a roll of small diameter may be substituted for the bar 6. The bar It, being on the upper side of the paper, touches it lightly, and is not liable to take off too much of the material, but has the effect ofsmoothing the same and removing any projecting lumps or refuse that may collect thereon.

If, instead of giving the paper an upper coating of sand, it is desired to lay thereon a second web of paper or other material, it may be done by adding a third roll, c, and leading a web of paper therefrom over the top of the first web. Then, if the ends of the Webs are laid together and drawn out of the machine, two of them will be laid down upon and caused to adhere to the opposite sides of the tarre sheet. a

The web h .ing paper for the burlap or fabric.

The machine is simple and eflicient in its operation, cheap -in its construction, and enables me to effect a very large saving in the cost of the production of roofing-paper and rooting fabric over any prior method of which "I have knowledge.

Heretofore the operation of tarring the paper has been conducted separately; but by my method and apparatus I am enabled to conduct the operations of tarring the web, uniting thereto an untarred web, and sanding the other side, or uniting thereto a second nntarred web, at one and the same time, and with no additional labor or expense over the former single operation of simply tarring the web. Moreover, I obtain a superior article.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination, in a machine for making roofing fabric, of a rat for containing tar or similar material, a roller for carrying a web of roofing-paper, a guide-roll in the vatfor directing the web of paper through the bath, a roller arranged at the delivery side for carrying a web of burlap or other material, and of guiding the saturated web on its passage from the bath, a scraper or scrapers arranged between the bath and the delivery-opening, and a sanding-hopper arranged on the delivery side over the path of the saturated web, substantially as and for the purposes described.

2. The combination of a vat forcontaining tar or similar material, a roller for carrying a web of roofing-paper, a guide-roll in the vat for directing the web of paper through the bath, a roller arrangd near the delivery side, under the path of the saturated web, for carrying a web of burlap or similar material, a sanding-hopper arranged at the delivery side over the path of the saturated web, substantially as and for the purposes described.

3. In a machine for making roofing fabric, a serrated scraper, in combination with the tarring-vat and guiding-rollers, for the purpose of removing a portion of the tar from the sheet as it'passes from the vat, substantially as and for the purposes described.

- In .testimony whereof I have hereunto set my hand this 9th day of January, A. D. 1883.

HENRY M. MINER. Witnesses:

W. B. CORWIN, T. B. KERR. 

